Minor changes in the test environment

testing/tests/tnc/tnccs-dynamic/hosts/carol/etc/strongswan.conf

@@ -10,6 +10,11 @@ charon {
     eap-tnc {
       protocol = tnccs-1.1
     }
+  }
+}
+
+libimcv {
+  plugins {
     imc-test {
       command = allow
     }

testing/tests/tnc/tnccs-dynamic/hosts/dave/etc/strongswan.conf

@@ -10,6 +10,11 @@ charon {
     eap-tnc {
       protocol = tnccs-2.0
     }
+  }
+}
+
+libimcv {
+  plugins {
     imc-test {
       command = isolate
     }